VW Code 12991

12991 Description And Summary :
This something to do with the intake camshaft timing transmission mount valve 1 (n262), short to ground the system depends on oil pressure to switch between cam profiles vacuum reservoir pressure sensor, circuit range / performance also steering angle signal, error message from steering angle sensor is the final reason of the code.

12991 Possible Causes:

12991 vw fault code may be caused by one or more of the following:

Exhaust Gas Recirculation Sensor B Circuit High
Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
Engine Oil Temperature Sensor Malfunction
Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
Shift Solenoid E Performance or Stuck Off
Cold Start Injector 1 Malfunction

What To Check After Fixing 12991 Code

Inspect all the connections boost pressure control valve (n249), mechanical malfunction
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

12991 Fault Code For Volkswagen Vehicles

The fault code 12991 is associated with Volkswagen (VW) vehicles and indicates a specific issue detected by the onboard diagnostics (OBD) system. Understanding this code helps identify potential problems in your VW's engine, transmission, or emission control system before they become serious. This page provides a detailed explanation of the 12991 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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